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Pottorff > Fire - Smoke Dampers > Smoke Dampers > Ceiling Radiation > CFS-172

Model CFS-172

3 Hour Ceiling - 1-1/2 Hour Fire
Combination Ceiling Radiation Smoke and Fire Smoke Damper

The CFS-172 combination ceiling radiation smoke and fire smoke damper employs triple-V blades for point-of-origin control of radiant heat, fire and smoke in static and dynamic smoke management systems. The CFS-172 is installed horizontally in the ceiling membrane of floor-ceiling and roof-ceiling assemblies with fire resistance ratings up to 2,000 ft/min (10.2 m/s) and 4 in. wg. (1.0 kPa) and may be installed horizontally in floors or assemblies with fire resistance ratings up to 2 hours.


CFS-172 Combination Ceiling Radiation Smoke and Fire Smoke Damper

Standard Construction

Frame: 5" x 1" (127 x 25) galvanized steel hat channel with interlocking corner gusset. Equivalent to 13 ga. (2.4) channel frame. Low profile head and sill are used on sizes less than 13" (330) high.

Blades: 6" x 16 ga. (152 x 1.6) galvanized steel - triple-V.

Side-Plate: 14-5/16" x 20 ga. (364 x 1.0) galvanized steel.

Axles: 1/2" (13) diameter plated steel hex.

Linkage: Concealed in frame.

Bearings: Stainless steel oilite, sleeve-type.

Seals: Silicone blade edge seals and flexible metal jamb seals.

Actuator: 120 VAC, power-open, spring-close, external mount.   

Fire Closure Device:
HS-10 (electric actuators)
PFV (pneumatic actuators)

Fire Closure Temperature: 165oF (75oC)

Minimum Size: 6" x 6" (152 x 152)

Maximum Size:
Square: 12" x 12" (305 x 305)
Rectangular: 24" (610) W or 12" (305) H with a maximum area of 144 in2. (929 cm2)


UL 555C Fire Resistance Rating: 3 hour (horizontal, for use in 1, 2 or 3 hour rated assemblies)

UL 555 Fire Resistance Rating:
1-1/2 hour (horizontal)
1 hour (tunnel-type corridor ceiling)

UL 555S Leakage Class:

Maximum Temperature: 350oF (177oC)

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